Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Apr. 15, 2021
Significant Accounting Policies [Line Items]
Restricted cash	$ 819	$ 819	$ 8,744	$ 8,302
CSAM [Member]
Significant Accounting Policies [Line Items]
Impairment recognized, related to one of the short term funds invested	$ 200	$ 1,200
Secured Notes [Member]
Significant Accounting Policies [Line Items]
Debt instrument, interest rate	12.00%	12.00%			12.00%
Security For Property Rental Obligations of Subsidiary [Member]
Significant Accounting Policies [Line Items]
Restricted cash	$ 800	$ 800	700
Senior Secured Notes Due 2023 [Member] | Cash Reserve Account Held by Collateral Agent [Member]
Significant Accounting Policies [Line Items]
Restricted cash	$ 0	$ 0	$ 8,000